Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 20, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 8, 2021, 8:28 PM MDT for Dewey County, South Dakota. It was in force for 47 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 8, 2021, 8:28 PM MDT (02:28 UTC)
- Expired
- Jun 8, 2021, 9:15 PM MDT
- In force
- 47 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
County Dewey County, SD
The radar
The Rapid City radar (KUDX), 157 km from the middle of the area, began a volume at 02:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 8, 8:39 PM MDT | TSTM WND GST 58 | 4 Nw Lantry, SD | MESONET STATION LANS2 LANTRY 3 NW. TIME ESTIMATED BY RADAR. GUST OCCURRED BETWEEN 852 PM AND 952 PM CDT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 2.5 hours before the alert went out and 164 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2269 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 2498 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.2
The text
As transmitted.
854
WUUS53 KABR 090228
SVRABR
SDC041-090315-
/O.NEW.KABR.SV.W.0020.210609T0228Z-210609T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Aberdeen SD
828 PM MDT Tue Jun 8 2021
The National Weather Service in Aberdeen has issued a
* Severe Thunderstorm Warning for...
Northwestern Dewey County in north central South Dakota...
* Until 915 PM MDT.
* At 827 PM MDT, a severe thunderstorm was located near Bear Creek,
or near Dupree, moving east at 15 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* This severe thunderstorm will be near...
Bear Creek around 840 PM MDT.
Other locations in the path of this severe thunderstorm include Green
Grass.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4504 10148 4528 10149 4533 10116 4499 10116
4499 10150 4503 10150
TIME...MOT...LOC 0227Z 264DEG 14KT 4514 10154
HAIL...1.00IN
WIND...70MPH
$$
Lueck3 follow-up statements
602
WWUS53 KABR 090240
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
840 PM MDT Tue Jun 8 2021
SDC041-090315-
/O.CON.KABR.SV.W.0020.000000T0000Z-210609T0315Z/
Dewey SD-
840 PM MDT Tue Jun 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM MDT
FOR NORTHWESTERN DEWEY COUNTY...
At 840 PM MDT, a severe thunderstorm was located near Bear Creek, or
8 miles north of Lantry, moving east at 15 mph.
This is a very dangerous storm.
HAZARD...80 mph wind gusts and ping pong ball size hail.
SOURCE...Radar indicated.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be heavily damaged. Expect
considerable damage to roofs, windows, and vehicles.
Extensive tree damage and power outages are likely.
Locations impacted include...
Green Grass.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. This storm has the potential to cause
serious injury and significant property damage.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4525 10149 4532 10116 4499 10116 4499 10150
4503 10150 4504 10148
TIME...MOT...LOC 0240Z 265DEG 15KT 4514 10145
TORNADO...POSSIBLE
HAIL...1.50IN
WIND...80MPH
$$
Lueck284
WWUS53 KABR 090253
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
853 PM MDT Tue Jun 8 2021
SDC041-090315-
/O.CON.KABR.SV.W.0020.000000T0000Z-210609T0315Z/
Dewey SD-
853 PM MDT Tue Jun 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM MDT
FOR WEST CENTRAL DEWEY COUNTY...
At 853 PM MDT, a severe thunderstorm was located near Green Grass, or
8 miles northeast of Lantry, moving east at 15 mph.
This is a very dangerous storm.
HAZARD...80 mph wind gusts and tennis ball size hail.
SOURCE...Radar indicated.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be heavily damaged. Expect
considerable damage to roofs, windows, and vehicles.
Extensive tree damage and power outages are likely.
Locations impacted include...
Eagle Butte, Lantry, South Eagle Butte, Green Grass, Bear Creek and
Cheyenne River Reservation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
This storm is producing destructive winds and large damaging hail.
SEEK SHELTER NOW inside a sturdy structure and stay away from
windows.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4521 10149 4530 10116 4499 10116 4499 10150
4503 10150 4504 10148
TIME...MOT...LOC 0253Z 269DEG 15KT 4512 10135
TORNADO...POSSIBLE
HAIL...2.50IN
WIND...80MPH
$$
Lueck532
WWUS53 KABR 090303
SVSABR
Severe Weather Statement
National Weather Service Aberdeen SD
903 PM MDT Tue Jun 8 2021
SDC041-090315-
/O.CON.KABR.SV.W.0020.000000T0000Z-210609T0315Z/
Dewey SD-
903 PM MDT Tue Jun 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM MDT
FOR WEST CENTRAL DEWEY COUNTY...
At 903 PM MDT, a severe thunderstorm was located near Green Grass, or
8 miles north of Eagle Butte, moving east at 15 mph.
This is a very dangerous storm.
HAZARD...80 mph wind gusts and two inch hail.
SOURCE...Radar indicated.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be heavily damaged. Expect
considerable damage to roofs, windows, and vehicles.
Extensive tree damage and power outages are likely.
Locations impacted include...
Eagle Butte, South Eagle Butte, Green Grass and Cheyenne River
Reservation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. This storm has the potential to cause
serious injury and significant property damage.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4530 10116 4499 10116 4499 10136 4522 10144
TIME...MOT...LOC 0303Z 264DEG 14KT 4512 10129
TORNADO...POSSIBLE
HAIL...2.00IN
WIND...80MPH
$$
LueckThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 6:17 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 43 min |
| Jun 8, 6:22 PM MDT | Flash Flood Warning | ABR | Corson | 3 hr |
| Jun 8, 6:44 PM MDT | Flash Flood Warning | ABR | Corson, Dewey | 3 hr |
| Jun 8, 6:44 PM MDT | Special Weather Statement | ABR | Corson | 31 min |
| Jun 8, 7:02 PM MDT | Special Weather Statement | ABR | Corson | 28 min |
| Jun 8, 7:11 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 49 min |
| Jun 8, 7:21 PM MDT | Tornado Warning | ABR | Corson, Dewey | 24 min |
| Jun 8, 7:25 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 50 min |
| Jun 8, 7:44 PM MDT | Tornado Warning | ABR | Corson | 16 min |
| Jun 8, 8:11 PM MDT | Special Weather Statement | ABR | Corson | 34 min |
| Jun 8, 9:12 PM MDT | Severe Thunderstorm Warning | ABR | Dewey | 36 min |
| Jun 8, 9:33 PM MDT | Flash Flood Warning | ABR | Corson, Dewey | 8 hr |
| Jun 8, 10:54 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 66 min |
| Jun 8, 11:58 PM MDT | Severe Thunderstorm Warning | ABR | Dewey, Jones, Stanley | 37 min |
| Jun 9, 12:03 AM MDT | Special Weather Statement | ABR | Corson, Dewey | 57 min |
| Jun 9, 12:40 AM MDT | Special Weather Statement | ABR | Jones, Stanley | 65 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.